Electronics

Question 1

Sensors (input components)

Answer 1

A sensor is affected the conditions around it. Gives input signal to electronic system

Question 2

Examples of sensors

Answer 2

Light dependent resistors
Thermistors
Piezoelectric sensors

Question 3

Switches (control/process components)

Answer 3

Reason:allows or prevents electrical power from flowing round a circuit
For any device that needs power to turn on and off

Question 4

Control/Process components examples

Answer 4

Switch
Resistor
Programmable components

Question 5

Thermistor (input component)

Answer 5

Reason: Resistance of it changes as temperature changes. Change in resistance can be used as an input.
For fridges, freezers, centrak heating systems to maintain temperatures

Question 6

Piezoelectric sensor (input component)

Answer 6

Reason: can change mechanical motion or force into electrical energy- it can produce an electrical pulse from pressure, such as by hitting it
For igniting lighters, portable camping stoves and in microphones (where soundwaves create pressure that makes the electrical pulse)

Question 7

Resistor (process/control component)

Answer 7

Reason: To limit/control the flow of current- hace a tolerance of how much current they allow in a circuit and resists current flow if it goes out of tolerance)
For all electrical products - it helps to control the flow of current and protects delicate components bring overloaded. Prevents damage to components.

Question 8

Programmable components (process/control device)

Answer 8

Reason: chip that can be programmed to make decisions based on an input
For most modern electrical products (e.g washing machines are programmed to work when the drum door is shut and the on/off button is pressed)

Question 9

Output components examples

Answer 9

Loudspeaker
Motor
Light-emitting diode

Question 10

Loudspeaker (output device)

Answer 10

Reason: uses pulses of electricity to move an electromagnet that vibrates to create a sound
For speakers, headphones and radios

Question 11

Motor (output device)

Answer 11

Reason: converts power into rotary motion that can turn a spindle linked to gears or wheels to make them move
For cars and trains

Question 12

Light emitting diode (output device)

Answer 12

Reason: gives out light when electricity is passed through it. long lasting low power light
For torches, lamps, power indicators

Question 13

Buzzers (output components)

Answer 13

Makes a sound

For in a sensing device to notify people of a warning or something that needs their attention